WO2010038449A1 - 機械装置の製造方法及びこの方法で製造した冷凍サイクル装置 - Google Patents

機械装置の製造方法及びこの方法で製造した冷凍サイクル装置 Download PDF

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Publication number
WO2010038449A1
WO2010038449A1 PCT/JP2009/005032 JP2009005032W WO2010038449A1 WO 2010038449 A1 WO2010038449 A1 WO 2010038449A1 JP 2009005032 W JP2009005032 W JP 2009005032W WO 2010038449 A1 WO2010038449 A1 WO 2010038449A1
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WO
WIPO (PCT)
Prior art keywords
hollow part
manufacturing
mechanical device
refrigeration cycle
cylindrical member
Prior art date
Application number
PCT/JP2009/005032
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
西原義和
佐野潔
吉椿紀史
安田透
Original Assignee
パナソニック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Priority to EP09817490.7A priority Critical patent/EP2253906A4/de
Priority to CN2009801102870A priority patent/CN101978230A/zh
Publication of WO2010038449A1 publication Critical patent/WO2010038449A1/ja

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/08—Auxiliary devices therefor
    • B23K3/085—Cooling, heat sink or heat shielding means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/06—Tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/10—Aluminium or alloys thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/12—Copper or alloys thereof

Definitions

  • the present invention relates to a method for manufacturing a mechanical device having hollow parts such as mufflers and accumulators.
  • the mechanical apparatus will be described by taking a refrigeration cycle apparatus of an air conditioner as an example.
  • Conventional air conditioners generally include an indoor unit and an outdoor unit connected via a refrigerant pipe, and the outdoor unit is usually provided with a compressor, a four-way valve, a decompressor, and a heat exchanger.
  • the indoor unit is provided with a heat exchanger.
  • an accumulator is provided on the refrigerant suction side of the compressor, and a muffler is provided on the refrigerant discharge side (see, for example, Patent Document 1 or 2).
  • the C1220-H material phosphorus deoxidized copper specified in JIS H 3100 is often used so far, and this material has high tensile strength and spreadability. Excellent in drawing workability, weldability, corrosion resistance, and weather resistance.
  • a C1220-H material copper tube is cut to a predetermined length and subjected to drawing (die drawing) at both ends to form hollow parts such as mufflers and accumulators of a desired shape.
  • the refrigeration cycle is constructed by brazing them to the refrigerant piping.
  • the temperature of the brazing part is heated to about 800 ° C. by brazing, and the temperature of the body part of the hollow part becomes high, so that the material is annealed and the strength of the material is significantly reduced. Therefore, the thickness of the material had to be increased to some extent.
  • An object of the present invention is to provide a method for manufacturing a mechanical device having a hollow part that can be used.
  • the present invention is a method of manufacturing a mechanical device having a hollow part, wherein a cylindrical metal member is cut into a predetermined length, and both ends of the cylindrical member are processed to form a cylinder.
  • a hollow part having both end portions with a diameter smaller than the diameter of the member is manufactured, and when the both ends of the hollow part and the connecting pipe are joined, the body part and both end parts of the hollow part are joined while cooling. It is characterized by.
  • Copper, copper alloy, aluminum, or aluminum alloy metal is used as the cylindrical member, and brazing is performed by holding the body and both ends of the hollow part at a temperature lower than the inflection point of the tensile strength. Done.
  • brazing is performed by holding the body and both ends of the hollow part at about 300 ° C. or less.
  • brazing is performed by holding the body and both ends of the hollow part at about 200 ° C. or less.
  • the hollow part can be cooled while being held by a jig provided with a cooling device that brings the body and both ends of the hollow part to a temperature at which a high tensile strength higher than the inflection point of the tensile strength can be maintained.
  • the hollow part may be any of an accumulator and strainer attached to the refrigerant suction side of the compressor of the refrigeration cycle apparatus, a muffler and oil separator attached to the refrigerant discharge side of the compressor, and a dryer attached to the refrigerant pipe. Good.
  • a hollow part may be produced by performing spatula drawing or pressing on both ends of the cylindrical member.
  • the refrigeration cycle apparatus can be manufactured by the above-described method for manufacturing a mechanical apparatus having a hollow part.
  • both ends of a cylindrical member of a predetermined length are processed to produce a hollow part, and the body part and both end parts of the hollow part are joined to the connection pipe while cooling,
  • the material strength of the cylindrical member does not decrease, the thickness of the hollow part can be reduced to reduce the material used, and the weight can be reduced and the cost can be reduced.
  • the hollow parts are produced by performing spatula drawing processing with relatively little heat generation at both ends of the cylindrical member, it is possible to suppress a decrease in strength of the material of the cylindrical member.
  • FIG. 1 is a cross-sectional view of a muffler that constitutes a refrigeration cycle.
  • Fig. 2 is a graph showing the tensile strength of phosphorus-deoxidized copper and copper alloy with respect to the annealing temperature.
  • FIG. 3 is a graph showing the yield strength and tensile strength of an aluminum alloy with respect to the annealing temperature.
  • a refrigeration cycle such as an air conditioner is configured by connecting a compressor, a four-way valve, a decompressor, a heat exchanger provided in an outdoor unit, and a heat exchanger provided in the indoor unit through a refrigerant pipe.
  • the refrigerant suction side of the compressor separates the refrigerant gas and liquid that flow to the low pressure side during the operation of the refrigeration cycle, sends only the gas to the compressor, and a large amount when the operation of the refrigeration cycle is stopped.
  • An accumulator for storing the flowing liquid refrigerant is provided, and a muffler is provided on the refrigerant discharge side to muffle the pulsation of the refrigerant discharged from the compressor.
  • Hollow parts such as mufflers and accumulators are produced by processing cylindrical members such as copper tubes or copper alloy tubes.
  • a C1220-H material or the like is used, and as the copper alloy pipe, a solid solution strengthened heat resistant alloy, a precipitation hardening heat resistant alloy, or the like is used.
  • the C1220-H material is stipulated in JIS H 3100, and the copper alloy material is a material with improved heat resistance strength due to solid solution strengthening of Sn, a material with improved heat resistance strength due to precipitation hardening of Co, etc. It has been known.
  • FIG. 1 shows a muffler M as an example of a hollow part provided in the refrigeration cycle apparatus.
  • this muffler M is a hemisphere provided on both sides of a large-diameter portion (body portion) 2 by drawing a cylindrical member having a predetermined length.
  • the narrow-diameter portion (body portion) 4 and a small-diameter portion 6 connected to the restrictor portion 4 are processed into a shape, and the small-diameter portion 6 is connected to the connection pipe 8.
  • FIG. 2 shows the tensile strength (tensile strength of the copper alloy containing 0.025% by mass phosphorus containing phosphorus deoxidized copper, 0.029% by mass phosphorus and 0.67% by mass tin with respect to the annealing temperature.
  • the tensile test was conducted according to JIS Z 2241.
  • these materials gradually decrease in tensile strength up to a predetermined annealing temperature (about 300 ° C.), and at temperatures exceeding the predetermined annealing temperature, the copper alloy has a rapid tensile strength.
  • phosphorous deoxidized copper has a property of gradually decreasing.
  • the present invention has been made paying attention to this characteristic, and when connecting the small-diameter portions 6 provided at both ends of the muffler M to the connecting pipe 8, the temperature of the muffler M is drastically reduced in the tensile strength of the muffler material. I try to keep the connection at a temperature that doesn't.
  • a copper tube or a copper alloy tube having a predetermined thickness is cut into a predetermined length, and both ends thereof are subjected to spatula drawing or pressing to generate relatively little plastic deformation.
  • 1 is manufactured, and then the connecting pipe 8 is inserted into the small-diameter portion 6, and the muffler M (the trunk portions 2, 4 and the small-diameter portion 6) is made of a cooling medium such as air or water. Joining by brazing while directly cooling or holding or cooling the muffler M with a jig provided with a cooling device that maintains a high tensile strength above the inflection point of the tensile strength. .
  • the improved product according to the present invention comprises a cooling device that can maintain the muffler M below the inflection point of the tensile strength by directly cooling the muffler M with water when connected to the connection pipe 8. The temperature is suppressed to about 300 ° C. or lower by cooling while being held by a jig.
  • the fracture pressure of the conventional product is lower than that of the improved product according to the present invention even though it is thicker. That is, in the case of the conventional product, the temperature at the time of brazing between the small diameter portion 6 and the connection pipe 8 rises to near the melting point of the material of the muffler M and the connection pipe 8 (for example, about 800 ° C.). As can be seen, at such a high temperature, the tensile strength of the material is considerably reduced, so by increasing the thickness of the muffler M, a predetermined strength (strength that can withstand a pressure three times the maximum internal pressure) is obtained. ).
  • aluminum or aluminum alloy can be used instead of copper or copper alloy.
  • FIG. 3 shows the yield strength and tensile strength (softening characteristics) of the aluminum alloy (1100 series) with respect to the annealing temperature.
  • the yield strength and tensile strength are about 200.
  • the temperature exceeds 270 ° C., it rapidly decreases to about 270 ° C., and when it exceeds about 270 ° C., it gradually decreases.
  • the temperature at which the brazing material melts is about 550 ° C., which is close to the melting temperature of the base material. Therefore, by brazing the muffler M during brazing, brazing can be performed without melting the base material. This is effective in terms of ease of brazing.
  • the manufacturing method of the refrigeration cycle apparatus according to the present invention has been described by taking the muffler or the accumulator as an example of the hollow part.
  • the present invention is not limited to the muffler or the accumulator but is installed between the compressor and the condenser.
  • the oil separator oil separator for separating and removing the refrigeration oil in the refrigerant discharged from the compressor, and the strainer (filter for removing dust and metal fragments in the refrigerant installed at the suction port of the compressor)
  • a dryer installed in the refrigerant pipe for removing moisture in the refrigerant.
  • the air conditioner in which the outdoor unit and the indoor unit are connected via the refrigerant pipe has been described as an example.
  • the present invention is not limited to the air conditioner having this configuration, As long as it is a refrigeration cycle apparatus having a hollow part, such as an outdoor air conditioner in which an air conditioner and an indoor unit are integrated, it can be applied to any apparatus.
  • the manufacturing method of the refrigeration cycle apparatus according to the present invention can reduce the thickness of the hollow parts constituting the refrigeration cycle to achieve weight reduction, and thus reduce costs, various methods including an air conditioner can be achieved. It is useful as an apparatus for manufacturing a refrigeration cycle apparatus.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Exhaust Silencers (AREA)
PCT/JP2009/005032 2008-10-02 2009-09-30 機械装置の製造方法及びこの方法で製造した冷凍サイクル装置 WO2010038449A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09817490.7A EP2253906A4 (de) 2008-10-02 2009-09-30 Verfahren zur herstellung einer maschinenvorrichtung und mit diesem verfahren hergestellte kühlzyklusvorrichtung
CN2009801102870A CN101978230A (zh) 2008-10-02 2009-09-30 机械装置的制造方法和利用该方法制造的冷冻循环装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-257420 2008-10-02
JP2008257420A JP2010085064A (ja) 2008-10-02 2008-10-02 機械装置の製造方法及びこの方法で製造した冷凍サイクル装置

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WO2010038449A1 true WO2010038449A1 (ja) 2010-04-08

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PCT/JP2009/005032 WO2010038449A1 (ja) 2008-10-02 2009-09-30 機械装置の製造方法及びこの方法で製造した冷凍サイクル装置

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EP (1) EP2253906A4 (de)
JP (1) JP2010085064A (de)
CN (1) CN101978230A (de)
WO (1) WO2010038449A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102756240A (zh) * 2012-07-02 2012-10-31 浙江方宏空调设备有限公司 一种单腔共振式车用空调消音器制造方法
CN114413531A (zh) * 2022-01-11 2022-04-29 河南新科隆电器有限公司 一种冰箱/冷柜用新型储液罐及其加工方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103252595B (zh) * 2013-05-28 2015-04-01 安徽众汇制冷有限公司 一种连接铜与不锈钢的钎料及其应用和焊接消音器的方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS629154A (ja) 1985-07-05 1987-01-17 松下電器産業株式会社 空気調和機の冷凍サイクル
JPH0323095A (ja) * 1989-06-20 1991-01-31 World Kogyo Kk ろう付方法とその装置
JPH0871740A (ja) * 1994-09-09 1996-03-19 Sunrise Techno:Kk Ａｌ製ホース口金具のロウ付け製造方法
JPH08207138A (ja) * 1995-02-06 1996-08-13 Nichirin:Kk 配管用円筒体の溶着方法
JPH09138026A (ja) 1995-11-14 1997-05-27 Sanyo Electric Co Ltd 冷凍サイクル及びその冷凍サイクルを備えた空気調和機
JPH10296432A (ja) * 1997-05-02 1998-11-10 Keiji Matsumoto 高周波ろう付方法
JP2001009569A (ja) * 1999-06-30 2001-01-16 Honda Motor Co Ltd 金属部材の接合構造および接合方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS629154A (ja) 1985-07-05 1987-01-17 松下電器産業株式会社 空気調和機の冷凍サイクル
JPH0323095A (ja) * 1989-06-20 1991-01-31 World Kogyo Kk ろう付方法とその装置
JPH0871740A (ja) * 1994-09-09 1996-03-19 Sunrise Techno:Kk Ａｌ製ホース口金具のロウ付け製造方法
JPH08207138A (ja) * 1995-02-06 1996-08-13 Nichirin:Kk 配管用円筒体の溶着方法
JPH09138026A (ja) 1995-11-14 1997-05-27 Sanyo Electric Co Ltd 冷凍サイクル及びその冷凍サイクルを備えた空気調和機
JPH10296432A (ja) * 1997-05-02 1998-11-10 Keiji Matsumoto 高周波ろう付方法
JP2001009569A (ja) * 1999-06-30 2001-01-16 Honda Motor Co Ltd 金属部材の接合構造および接合方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2253906A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102756240A (zh) * 2012-07-02 2012-10-31 浙江方宏空调设备有限公司 一种单腔共振式车用空调消音器制造方法
CN114413531A (zh) * 2022-01-11 2022-04-29 河南新科隆电器有限公司 一种冰箱/冷柜用新型储液罐及其加工方法

Also Published As

Publication number Publication date
CN101978230A (zh) 2011-02-16
JP2010085064A (ja) 2010-04-15
EP2253906A4 (de) 2014-11-12
EP2253906A1 (de) 2010-11-24

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